Konstantinidis, StefanieKruse, FredKlenke, MartinWohlgemuth, VolkerPage, BerndVoigt, Kristina2019-09-162019-09-162009https://dl.gi.de/handle/20.500.12116/26267The German environmental information portal PortalU® is now more than three years accessible via www.portalu.de for both citizens and environmental experts. This paper aims at drawing up an interim balance of the development from PortalU®. What was the starting point for PortalU®? What was the motivation to build up the portal? Which features offer PortalU® today? And which development perspectives arise for the technology from today’s point of view? Both important technical aspects as well as important organizational and content aspects will be thereby high lighted.Text/Conference Paper